Plow.



No. 642,964. Patented Feb. 6, I900.

W. DAVIDSON. J

PLOW.

(Application filed Nov. 6, 1899.)

(No Model) 2 Sheets-Shoat 1.

% INVENTOH 2 I No. 642,964. Patented Feb. 6, I900. W. DAVIDSON.

PLOW.

(Application filed Noy. 6, 1899.) (No Model.) 2 Sheets-Sheet 2 HH II H IIHHH I- I, I" 62 I I I 1 .1 I I lv LI lulu] I II 6' MN l 1; I LIL r in: I:

W/ TNESSES IINHED STATES PATENT FFICE.

WILLIAM DAVIDSON, OF EVANSVILLE, INDIANA, AS SIGNOR TO HENRY F. BLOUNT, OF SAME PLACE.

PLOW.

SPECIFICATION forming part of Letters Patent No. 642,964, datedFebruary 6, 1900. Application filed November 6,1899- Serial No. 736,001. (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM DAVIDSON, a citizen of the United States of America, residing at Evansville, in the county of Vanderburg, in the State of Indiana, have invented certain new and useful Improvements in Plows, of which the following is a specification.

This invention relates to a plow in which certain wearing parts are detachable in order that they may be readily duplicated to prolong the life of the plow, and it is especially designed for a middle-breaker or billing-up plow for cultivating cotton, potatoes, or other crops to which it is adapted.

The invention consists in the peculiar construction of the detachable plow-point and its means of attachment to the plow body or frog.

Figure 1 of the accompanying drawings represents a perspective view of a plow embodying the improvements. Fig. 2 represents a bottom perspective view of the plow. Fig. 3 represents a perspective top and side view of the plow-point detached from the plow. Fig. 4 represents an enlarged perspective bottom and side view of the plow-point detached. Fig. 5 represents a longitudinal vertical section of the front portion of the plow on line 5 5.0f Fig. 6, which is partly through the center and partly at one side, showing the plowpointin position on the frog, with its lip overlapping the toe of the plowshare and one of its tongues engaging a flange of the frog, a portion of one of its tongues being broken out, showing the beveled toe of the frog in its beveled socket. Fig. 6 represents a transverse section on line 6 6 of Fig. 5. Fig. 7 represents a perspective view of the detachable heel of the plow removed from the frog.

The same reference-numbers indicate the same parts in all the figures.

The plow herein illustrated comprises a body or frog 10, to which the other parts are detachably secured. This frog is constructed of metal, preferably cast-iron, and it consists mainly of a vertical web provided at its lower front portion with a beveled toe 11 and at its lower rear part with a recess adapted to receive a detachable heel 70 and on its opposite sides with recessed seats 12 and 13, in

which the ends of a duplex plow-beam 80 are secured. This frog has a front edge which is inclined rearwardly above said too and disposed on a concave curve, and it is provided along opposite sides of said edge with lateral projections, preferably in the form of flanges 14 and 15, which are beveled backward at acute angles to said frog and serve when constructed as herein shown as attaching-flanges for the plowshares and moldboards and as locking devices for the detachable plowpoint 60.

Separate plowshares 20 and 30 for opposite sides of a double plow are secured to the flanges 14 and 15, respectively, and constitute a double plowshare in separate parts detachable from the frog and from each other. The plowshare 20 is secured to the flange 14 by a lock-bolt 21 and by a lip on the plowpoint, as hereinafter described, and the plow share 30 is attached and secured in the same manner to the flange 15. The lower edges of these plowshares are above the lower edge of the frog to enable thelower portion of said frog to serve asa guide or keel for the plow. Separate moldboards 40 and 50 for opposite sides of the plow are also secured by bolts, as 41 and 42, to the flanges 14 and of the frog at points above the plowshares and 30, the lower front edges of the moldboards being flush with the rear upper edges of the plowshares.

A strap or cleat is bolted at its opposite ends to the inner faces of the plowshare 20 and moldboard 40, near the outer edges thereof, and overlaps the joint between them, holding the parts flush with each other. Asimilar strap or cleat connects the plowshare '30 with the moldboard 50.

Plow-handles 100 are attached to brackets 90, secured to the back of the moldboards 40 and 50.

A detachable plow-point 60 is applied to the frog 10. This plow-point is provided with tongues 62 and 63, having, respectively, boltholes 64 and 65,which register with each other and with the bolt-holes 16 in the frog 10. These tongues extend backward from the body of the plow-point and are disposed side by side apart from each other a distance equal to the thickness of the toe 11 of the frog and form an open socket therefor. The front end of this socket is beveled to fit the beveled front end of said toe. These tongues embrace said toe, and their upper edges are shaped to engage the under sides of the flanges H and 15. To effect this'engagement, the

tongues may be wedge-shaped in side elevation, as shown in the form illustrated in the drawings. This plow-point is preferably provided. with a broad flattened nose 66 at its front end and with a transverse lip 67, which overhangs the front portion of the tongues 62 and 63 and overlaps the front edges of the plowshares 20 and 30. This lip may constitute the upper end of a plow-point blade, which may be constructed in the form of lateral flanges united to the top of a wedgeshaped shank 61, constituting the body and nose of the plow-point, or the body and blade may be formed in any other suitable manner. A bolt 68, passed through the bolt-holes 64, 16, and 65, holds the plow-point against accidental detachment. VVhen the plow-point is in position on the frog, the bolt is relieved from strain, because the beveled contact of the socket 65 with the toe 11 and the contact of the tongues 62 and 63 with the flanges l4 and 15 operate to hold or practically lock the plow-point rigidly to the frog independent of the bolt connection therewith. The overlapping lip (57, fitting tightly over the toes of the plowshares, also tends to hold the plow-point firmly in place.

A detachable heel 70, provided with ears 71 and 72, is secured by bolts to the frog 10, at the rear recessed portion thereof. The rear car 72 has a slot 73, whereby the rear end of the heel is rendered adjustable. This heel has on its under side a longitudinal fin 75, which extends below the keel proper and adds a steadying effect to the plow.

One of the rearwardly-extending tongues on the plow-point may be omitted, if desired; but it is preferable to construct the plowpoint with two tongues.

I claim as my invention- 1. In a plow, the combination of a plowbody comprising a laterally-flanged vertical web beveled at its front end, a plow-point fitting said beveled front end and extended backward and locking under the flanged portion of said body, and means for securing said plow-point to said web.

2. In aplow, the combination ofa plow body or frog comprising a vertical web adapted to serve as a keel and provided with a beveled toe at its front end and with lateral flanges onits opposite sides alongits front edge, plowshares secured to said flanges, and a detachable plow-point adapted to fit said beveled toe and provided with tongues disposed side by side and embracing said toe and having their upper edges shaped to engage said flanges.

3. In a plow, the combination of a plow body or frog comprising a vertical web adapted to serve as a keel and provided with a beveled toe at its front end and with side flanges at its opposite sides along its front edge, plowshares secured to said flanges, and a detachable plow-point adapted to fit said beveled toe and provided with a lip overlapping said plowshares and with tongues disposed side by side and embracing said toe and having their upper edges shaped to engage said flanges.

i. In a plow, thecombination of a plow body or frog comprising a vertical web provided with lateral flanges along its upper front portion and having a beveled toe, plowshares secured to said flanges and terminating substantially even with said toe, and a detachable plow-pointhavinga beveled socket adapted to fit said beveled toe and to en gage said flanges.

5. A detachable plow-point for a plow com prising a vertical web having an inclined upper edge provided with lateral flanges, and tongues connected to the rear end of said vertical web and extending backward side by side therefrom, and adapted to embrace the plowfrog, the rear ends of said flanges forming a lip adapted to overlap the tongues and form a socket for the plowshares.

6. A detachable plow-point for a plow having a lip adapted to overlap the plowshares, and tongues extending rearward side by side and adapted to embrace the toe of the plowfrog.

7. A detachable plow-point for a plow provided with tongues extending rearward side by side and forming a socket for the toe of the plow-frog, the front end of said socket being beveled and the upper edges of said tongues being inclined.

8. A detachable plow-point for a plow provided with wedge-shaped tongues. disposed side by side and extending rearward from the body of the plow-point and forming a socket for the toe of the plow-frog.

9. A detachable plow-point for a plow provided with tongues disposed side by side and extending rearward from the body of the plowpoint and forming a socket for the toe of the plowfrog, the front end of said socket being beveled.

10. In a plow, the combination of a plow body or frog providedwith lateral projections, and a detachable plow-point having tongues disposed side by side and extending rearwardly from its body and engaging the lateral projection of the frog.

11. In a plow, the combination of a plow body or frog beveled at its front end and provided with lateral projections, and a detachable plow-point having a socket adapted to fit said beveled toe and provided with tongues disposed side by side and extending rearwardly from the body of the plow-point, said tongues engaging said lateral projections of the plow-frog.

WILLIAM DAVIDSON.

Witnesses:

O. F. J ACOBI, A. DIETRICH. 

